My husband doesn't understand

Ok so i have a 2yr old and im 8wks pregnant. I told my husband that i would like just some time to myself. Is that too much to ask? I have never been away from my son for more then a hour in 2 years. I want a date night just to be me, not a mom knee deep in diapers, and he wants to bring son along. Whats the point then?

So now my parents and my grandparents are taking a mini vacation. They are driving a hour away from their house to camp for 3 days. They like 30 mins from us so they would be less then 2 hours away. They want to take my son and i want them to take him because im a stay at home mom. Im tired. I just want to relax, maybe pull my hair down from the pony tail i been rocking for 2 years, put on a sexy dress before i start showing and my clothes dont fit and have sex with my husband with out having a toddler opening the door or saying "mommy" every 30 seconds.

He siad no! He wont let my son go and im just sitting here crying because i feel that once this one is born its going to be another 2 or more years before I'll get to be alone. I'll have newborn at night and toddler during day and no sleep, no time for me.

My husband says my job as a mom is to be home all day with the kids and have no help. I don't have a car or anyway to leave but my own two feet and i feel trapped. Don't get me wrong i love my son and my husband but i don't think he understands what is like being stuck in a house for 2 years all alone with a toddler. Am i being selfish? Idk what to do any more.